Revert "Update includes for webrtc/{base => rtc_base} rename (2/3)"

This reverts commit c3771cc4d37f5573fe53b7c7cff295a4f0f9560f.
(breaks downstream internal project)

BUG=webrtc:7634
NOTRY=True
NOPRESUBMIT=True

Review-Url: https://codereview.webrtc.org/2972463002 .
Cr-Commit-Position: refs/heads/master@{#18873}
diff --git a/webrtc/rtc_tools/simple_command_line_parser.h b/webrtc/rtc_tools/simple_command_line_parser.h
index b8c9037..960038b 100644
--- a/webrtc/rtc_tools/simple_command_line_parser.h
+++ b/webrtc/rtc_tools/simple_command_line_parser.h
@@ -15,8 +15,8 @@
 #include <string>
 #include <vector>
 
-#include "webrtc/rtc_base/constructormagic.h"
-#include "webrtc/rtc_base/gtest_prod_util.h"
+#include "webrtc/base/constructormagic.h"
+#include "webrtc/base/gtest_prod_util.h"
 
 // This is a very basic command line parsing class. We pass the command line
 // arguments and their number and the class forms a vector out of these. Than we